R5F21254SDFP#U0 Renesas Electronics America, R5F21254SDFP#U0 Datasheet - Page 189
R5F21254SDFP#U0
Manufacturer Part Number
R5F21254SDFP#U0
Description
IC R8C MCU FLASH 52LQFP
Manufacturer
Renesas Electronics America
Series
R8C/2x/25r
Datasheets
1.R5F211A2SPU0.pdf
(300 pages)
2.R5F21246SDFPU0.pdf
(61 pages)
3.R5F21246SDFPU0.pdf
(527 pages)
Specifications of R5F21254SDFP#U0
Core Processor
R8C
Core Size
16/32-Bit
Speed
20MHz
Connectivity
I²C, LIN, SIO, SSU, UART/USART
Peripherals
POR, Voltage Detect, WDT
Number Of I /o
41
Program Memory Size
16KB (16K x 8)
Program Memory Type
FLASH
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
2.2 V ~ 5.5 V
Data Converters
A/D 12x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
52-LQFP
For Use With
R0K521256S000BE - KIT EVAL STARTER FOR R8C/25
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
R5F21254SDFP#U0R5F21254SDFP#V2
Manufacturer:
Renesas Electronics America
Quantity:
10 000
- Current page: 189 of 527
- Download datasheet (6Mb)
R8C/24 Group, R8C/25 Group
Rev.3.00
REJ09B0244-0300
14.2.5.4
The following three workarounds should be performed in programmable wait one-shot generation mode.
(1) To write to registers TRBPRE and TRBPR during count operation (TCSTF bit is set to 1), note the
• When the TRBPRE register is written continuously, allow three or more cycles of the count source for each
• When the TRBPR register is written continuously, allow three or more cycles of the prescaler underflow
(2) Do not set both the TRBPRE and TRBPR registers to 00h.
(3) Set registers TRBSC and TRBPR using the following procedure.
Feb 29, 2008
write interval.
for each write interval.
following points:
(a) To use “INT0 pin one-shot trigger enabled” as the count start condition
(b) To use “writing 1 to TOSST bit” as the start condition
Programmable wait one-shot generation mode
Set the TRBSC register and then the TRBPR register. At this time, after writing to the TRBPR
register, allow an interval of 0.5 or more cycles of the count source before trigger input from the
INT0 pin.
Set the TRBSC register, the TRBPR register, and then TOSST bit. At this time, after writing to the
TRBPR register, allow an interval of 0.5 or more cycles of the count source before writing to the
TOSST bit.
Page 170 of 485
14. Timers
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